Apparatus for coating strip material



Dec. 27, 1927. 1,654,214

B. A. EVANS APPARATUS FOR COATING STRIP MATERIAL Filed Jan.22, 1925 2Sheets-Sheet 2 E I Hu 41 47 fizz/5x72275525? H mmp Patented Dec. 27,1927.

PATENT OFFICE.

UNITED STATES BENJAMIN A. EVANS, OF AKRON, OHIO, ASSIGNOR TO. THE B. IE.GODDEICH COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

APPARATUS FOR COATING STRIP MATERIAL.

Application filed January 22, 1925. $erial No. 3,953.

This invention relates to methods and apparatus for applying rubbercement or the like to strip material suchas the fab ric strips used inovershoes of the hooklessfastener type as anchorages or stringers forrespective series of jaw members, wherein the jaw members on thestringers of a palr are adapted to be iutcrcalated and engaged with eachother in succession by the movement of a slide mounted upon the twostringers in common, and to be disengaged from each other successivelyby movement of the slide in the opposite direction.

To adapt the stringers to become firmly united during vulcanization withthe flies of the over-shoe in which they are incorporated it isdesirable that the stringers or fabric strips be thoroughly rubberizedexcept along their adjacent edges, upon which the jaw members aremounted, and such rubberizing can best be done by an application ofrubber cement after the jaw members and slide have been mounted thereon,the two stringers of the pair joined at their ends which are to be atthe lower part of the assembly in the overshoe, and the two series ofjaw members intercalated and engaged with each other by movement of theslide to the opposite end of the assembly. It is important thatthecement be uniformly applied to all parts of the stringers which areto overlap or extend into the marginsof the flies of the shoe, withoutapplication of cement to the jaw members or the slide, and prior to myi11- vention, so far as I am aware, this was accomplished by placing ashield or stencil over the jaw members and slide and applying the cementto the exposed portions of the stringers by means of a brush,manipulated by hand.

My chief object is to provide an im proved machine and improvedprocedure adapted to save time and labor in applying rubber cement orthe like to articles such as the stringers or anchorage stripsdescribed. Further objects are to avoid waste of the material a pliedand to rovide for accurate and unlform applicatlon of the material, soas to obtain a better product.

f the accompanying drawings:

Fig. 1 is a front elevation of a machine embodying my invention in itspreferred form, a cement tank constituting a part thereof being shown insection.

Fig. 2 is a fragmentary front elevation,

partly in section, of a pair of cementing rolls constituting parts ofsaid machine.

Fig. 3 is a perspective view of scraper devices for preventing the rollsfrom carrying excessive amounts of cement, one of the rolls being shownin dot and dash lines, in its relation to said scraper devices.

Fig. 1 is a middle, vertical section of the machine, on line 4 t ofFig. 1. I

Fig. 5 is a horizontal section of the machine, on line 5-5 of Fig. 1.

Referring to the drawings, the machine comprises a cement tank providedwith legs 11, 11, and a cover 12 for preventing excessive evaporation ofsolvent from rubber cement 13 contained in the tank. Said cover is cutaway to accommodate, with but little clearance, the cement-transferringportions of the machine. Resting upon the floor of the tank and adaptedto be readily removed therefrom is a metal block 14, upon which aremounted two pairs of guide posts, 15, 15 and 16, 16, for the journalblocks, such as 17 17, of a pair of cementing rolls 18, 19, the lowerone of which, 19, has its lower portion extending into the cement 13,and is adapted, by turning of the rolls without worlr therein, to applycement to the upper roll. For securing the guide-post assembly inupright position in the tank a bracket 16 is secured to one of the guideposts 16 and has a forked outer end ada ted to straddle the upper marginof a wall 0 the tank, one of the forks being provided with a thumb screw16 adapted to be tightened against the said wall to clamp the bracket inlace.

1e journal blocks of the lower roll, 19, mounted between the guideposts, are supported by blocks, of which one is shown at 20, Fig. 4,mounted between the guide posts and resting upon the foundation block14:, and the journal blocks of the upper roll, mounted between the guideposts, are urged downward, to provide yielding pressure between therolls, by compression springs such as the one shown at 21, Fig. 4:,interposed between the respective journal blocks and a bridge plate 22screwed to the tops of the four guide posts, said springs being mountedupon respective studs such as the one shown at 23, Fig. 4, projectingdownward from said bridge plate.

Each of the cementing rolls is waisted or formed with a medial,circiunferential groove, 18 or 19, for the free passage of the awmembers, 24, 24, and slide, 25, of the fastener assembly, 26, said jawmembers constituting in effect a medial rib thereon, while the rollscircumferential zones adjacent said grooves are adapted yicldingly toembrace the stringers, 27. 27, of the fastener assembly, and feed thelatter through the device while applying cement to both faces of thestringers. Said zones are knurled, preferably being formed with knurlingelements of pyramidal form, as shown, clearly at 28, 28, Fig. 2, thepoints of said elements preferably lying slightly within the radiallimits of the adjacent cylindrical faces of the roll. The knurling isadapted to carry a relatively large quantity of cement and at the sametime to avoid slippage of the cement-lubricated fabric strips.

' Between each knurled zone and the medial groove each roll ispreferably formed with a flange 29 having a narrow cylindrical surface30 of larger diameter than that of the knurling, so that the flanges ofeach pair will bear against each other when the work is not in placebetween them, which results in the flange face 30 of the upper roll,which operates on the outer face of the fastener, being keptsubstantially free of cement. The said flanges are adapted to press morefirmly upon the work than the knurled portions, and thus to serve as asort of dam to prevent extrusion of cement from the knurled zones ontothe jaw members 24 or the portions of the stringers immediately adja--cent thereto.

The two rolls are adapted to be driven by a hand crank 31 secured uponthe shaft of the lower roll and a pair of intermeshed gears 32, 32secured upon the shafts of the two rolls respectively. I

For guiding the fastener assembly 26 between the rolls, a table orbracket 33 is mounted upon a bridge structure 34 connecting one of theguide posts 15 with the opposite post 16, said bridge structure beingsecured to said posts by brackets 35, 35, and the work guiding -bracket:33 is formed on its upper face with a longitudinal groove 36 toaccommodate and guide to the rolls the jaw members 24 and slide 25 ofthe fastener assembly, and with a tongue portion 33 whose upper face isan extension of the floor of said groove, said tongue portionextending-between the cementing rolls, past the nip thereof, at theposition of their oncumferential grooves 18, 19".

' To prevent the fastener assembly from adhering to and thus followingthe upper roll, as it passes from the nip of the rolls, a

ard 3 7, in the form ofa curved bar, is secured to the bridge plate 22and has a free end portion exten ing into the groove 18 of the upperroll, adjacent the nip, in position to dislodge the work from the upperroll. The tongue 33 of the guide 33 is adapted to prevent the work fromfollowing the lower roll downward from the nip.

The bridge structure 34 comprises a lower plate 38, secured to theadjacent guide posts by the brackets 35, and an upper plate 39 heldspaced from said lower plate by a scraper 40 secured to the lower plateby screws'49. 40 (Fig. 4), said scraper extending into the groove 19 ofthe lower roll, to scrape cement from the walls and floor of saidgroove, and by a pair of scrap ers 41, 41 secured to the lower plate byscrews 41, 41, 41 41 and extending radially inward along the end facesof the roll 19 to scrape cement from said end faces. The screws 41extend through the upper plate 39 as well as the scrapers 41 and thelower plate 38, but the construction is such that the upper plate 39 andparts carried thereby may be conveniently removed for cleaning cementtherefrom, by removing said screws 41 and screws 42, 42 which aremounted only in the upper plate 39 and the scrapers 41, while the screws41 hold said scrapers in place on the lower plate.

Secured on the upper plate 39 are two screw-apertured blocks 43, 43 ineach of which ismounted a thumb-screw 44 having its inner end swiveledin a flange 45 projecting upward from a scraper 46, each of the saidscrapers being slidably mounted in a guide-way defined by the plates 38and 39 and the bases of the fixed scrapers 40, 41, so that the scrapers46 may be adjusted by said thumb-screws respectively to scrape excesscement from the knurled and cylindrical faces of the lower roll 19. Thescraper assembly just described is adapted for ready disassembly of itsparts for cleaning cement therefrom when they become fouled, so that theharmful effects of dried. cement upon their operation may be avoided.

For scraping excess cement from the upper roll, 18, and returning it tothe tank 10, an L-shaped chute 47 is mounted upon a pair of scrapers 48,48 adapted to scrape the end faces of the said upper roll 18 and upon ascraper 49 adapted to scrape cement from the walls and floor of themedial groove 18 of said roll, said scrapers 48 and 49 at their basesserving as spacers between the chute 47 and a lower plate 59 connectingthe outer ends of a. pair of brackets 51, 51, projecting from theadjacent corner posts 15, 16. Slidably mounted in guide-ways defined bythe chute 47 and the bases of the scrapers 48, 48 are scrapers 52adapted to scrape excess cementfrom the working faces of the roll 18,each of said scrapers having projecting downward therefrom a lug 53 inwhich is swiveled the end of a thumb-screw 54 screw-threaded through alug 55 projecting downwardfrom the plate 50, for adjusting thescrapers52 to determine the amount of cement to be carried to the work by theroll. The floor of the chute l? and also the several scrapers, fittingagainst the under face thereof, slope down ward and away from the roll,so that cement scraped from the roll will flow away lever beingconnected to the chute 4:7 by a pull spring 60.

in the operation of the device, the parts being mounted as described andthe tank 10 being filled to a proper level with cement, the cementingrolls are first rotated without anyiwork between them, whereby the upperroll as well as the lower one is charged with cement, ll, fastenerassembly 26 is ,then passed through the device, its margins beingengaged by the surlaces oil the rolls 18, 19, adjacent the grooves l8,l9, and receiving cement tl'ieretrom. The operation as described isrepeated upon successive lastener assemblies, the rolls being drivenwithout work between them belore each piece o'l work is led through, orat sufiiciently frequent intervals to lreep the upper roll suflicientlycharged with cement. Excess cement from the rolls tlo'ws back into thetank 10, and the cover thereot, closely fitting about the cementingmechanism, keeps the cement in good condition by preventing exabovestatement of objects.

Modifications are possible within the scope of the invention, and I donot wholly limit my claims to the specific construction or the exactprocedure described.

I claim:

1. A device for applying a coating to an elongated, medially ribbedarticle, said device comprising two pairs of axially spaced-apart rollermeans adapted to engage the side margins only of the article and to feedthe same past a coating position,

and means adapted to support the article and to guide it to the saidroller means by engagement with its medial rib.

2. A device for applying a coating to an elongated, medially ribbedarticle, said device comprising two pairs-of axially spaced "the saidsupporting and guiding means.

3. A device for applying a coating to an elongated, medially ribbedarticle, said device comprising two pairs ot axially spaced-- apartroller means adapted to engage the side margins only of the article andto feed the same past a coating position, means adapted to support thearticle and to guide it to the said roller means by engagement with itsmedial rib, and means for applying coating material to the work-engagingfaces of the said roller means =4. A. device for applying a coating toan elongated article, said device comprising two pairs of axiallyspaced-apart roller means adapted. to engage the side margins only ofthe article and to teed the same past a coating position, and means forapplying coating material to the work-engaging faces of the said rollermeans, said faces compris ing smooth, circumterential zones adapted. toengage the article relatively close to its medial portion and. lrnurled,circumferential zones adapted to apply coating material to portions otthe article relatively remote from its medial portion.

5. .Z-l, device tor applying a coating to an elongated, medially ribbedarticle, said device comprising two pairs of axially spaced apart rollermeans adapted to engage the side margins only of the article to feed thesame and apply coating material thereto, means for applying coatingmaterial to the work-engaging faces of said roller means, and a guidingand supporting member extending through the space between the two pairsof roller means, from one side of their nip to the other, said memberbeing adapted to guide the article to the roller means by engagementwith its medial rib and to separate the article from members of theroller means as it, emerges from the nip thereof.

6.A coating device comprising a roll formed with a roughened,circumferential, materialrcarrying zone and with a circumferentialflange adjacent thereto, said flange being of greater diameter than thesaid roughened zone and adapted to act as a guard against lateral flowof coating material on the work from said roughened zone as the saidroll rotates in contact with the Work. 1

7. A coating device comprising a pair'of rolls formed with opposed,circumferential, material-carrying zones and with mating, outstanding,circumferential zones of smooth, cylindrica surface, means yieldinglyurging one of the said rolls toward the other, and means forapplyingcoating material to one of said rolls, the outstanding,

cylindrical zones of said rolls being adapted to bear against eachotherwhen the device is empty of work, to maintain one of them substantiallyfree of coating material when the rolls are turned to transfer coatingmaone roll to that of the other. 10

In witness whereof I have hereunto set my hand this 17th day of January,1925.

BENJAMIN A. EVANS.

